Accommodating for disability is cheesing the test score. Cheesing a test score is cheesing the metric. Cheesing the metric is always some form of lying, usually to yourself.

- You're lying to yourself about how good of a fit your are for the program.

- The professor/administration is getting inaccurate data about the teaching efficacy.

If you want to know if you can be a civil engineer despite your disability, the last thing you should do is correct for the disability in your primary success metric.

You show a touching level of confidence in the idea that test scores are a useful metric of anything anybody cares about... especially after they're Goodharted into oblivion. Maybe the extreme ends of the ranges are, if you compensate for noise sources. And giving somebody more time on the test may indeed be compensating for a noise source.